# Berkeley DB: DB_ENV->memp_fcreate
Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++

# DB_ENV->memp_fcreate

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    #include <db.h>

    int
    DB_ENV->memp_fcreate(DB_ENV *dbenvp, DB_MPOOLFILE **dbmfp, u_int32_t flags);

# Description

The DB_ENV->memp_fcreate method creates a DB_MPOOLFILE structure that is the handle for a Berkeley DB shared memory buffer pool file. A pointer to this structure is returned in the memory to which dbmfp refers. Calling the DB_MPOOLFILE->close method will discard the returned handle.

The flags parameter is currently unused, and must be set to 0.

The DB_ENV->memp_fcreate method returns a non-zero error value on failure and 0 on success.

# Errors

The DB_ENV->memp_fcreate method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions. If a catastrophic error has occurred, the DB_ENV->memp_fcreate method may fail and return DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.

# Class

DB_ENV, DB_MPOOLFILE

# See Also

Memory Pools and Related Methods`

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